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Genetic studies with Russian wheat aphid (Diuraphis noxia Mordvilko) in PI 294994 bread wheat (Triticum aestivum L.)

Creator:: Elsiddig, Ahmed A.
Abstract:: Russian wheat aphid (RWA), Diuraphis noxia (Mordvilko), is a widely distributed species in western north America, and a major economic pest of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.). The objectives of this study were to : 1) determine the inheritance of seedling and adult plant resistances in...
Resource Type:: Masters Thesis
Full Text:: , Ralph E. Berry and Adams W. Thomas for serving on my graduate committee. Special thanks are extended

Variation in adaptive traits of coastal Douglas-fir : genetic and environmental components

Creator:: Balduman, Lisa M.
Abstract:: Cold hardiness and phenology are important adaptive traits for perennial plant species in temperate climates. Timing of growth, dormancy, and associated cold acclimation and deacclimation represents a delicate balance between maximizing growth under favorable conditions and minimizing frost damage under unfavorable conditions. Geographic patterns of genetic variation in adaptive traits,...
Resource Type:: Masters Thesis

Development of oven and Karl Fischer techniques for moisture testing of grass seeds

Creator:: Benjamin, Ethan
Abstract:: Seed moisture is a primary factor influencing seed quality during harvesting, storage, and marketing of grass seed. However, the Association of Official Seed Analysts' Rules for Testing Seeds do not contain methods for moisture testing. The oven methods in use by seed testing laboratories in the U.S. are diverse and...
Resource Type:: Masters Thesis
Full Text:: during the past two years. I am grateful to Dr. Arnold P. Appleby, Dr. Thomas C. Moore and Mr. Thomas W

New configurations of bandpass filters in single and multilayer environment

Creator:: Gururajan, Kala
Abstract:: Mobile and telecommunication industry has experienced tremendous growth in the recent past. Miniaturization and increased functionality have become necessary for all passive components in the system. Bandpass filters are critical passive components in any communication system and the existing designs in the crucial 1-10 GHz bandwidth suffer many drawbacks. For...
Resource Type:: Masters Thesis
Full Text:: my heartfelt appreciation to my other committee members Dr. Thomas K. Plant and Dr. Joseph W. Nibler

Spherical Au Nanoparticle Interaction with Lipid Monolayers Probed with Sum Frequency Generation Spectroscopy

Creator:: Faase, Ryan A.
Abstract:: Nanoparticles have become more prevalent from their use in sunscreen to antimicrobial agents in socks. In light of these applications, gaining a fundamental understanding of how NPs interact with humans is crucial for their future. Specifically, how cells interact with NPs and what factors drive the modes of cellular uptake....
Resource Type:: Masters Thesis
Full Text:: to thank my committee members Dr. Gregory Herman, Dr. Liney Arnadottir, Dr. Adam Higgins, and Dr

A petrogenetic model for the Caribbean large igneous province

Creator:: Krawl, Kyle A.
Abstract:: The Caribbean Plateau is an oceanic large igneous province (CLIP). A widely accepted model for LIP petrogenesis proposes that these large bodies of igneous rock are formed by decompression melting associated with upwelling mantle plume heads during the initiation of hotspot activity. According to this classical model, petrogenesis occurs over...
Resource Type:: Masters Thesis
Full Text:: : _________________________________________________________ Robert A. Duncan Adam J. R. Kent The Caribbean

Evolution and inheritance of Cascadia sub-arc mantle reservoirs

Creator:: Bromley, Sarah Ashley
Abstract:: Inheritance from pre-existing mantle domains and fluid and melt contributions from active subduction together produce the geochemical signatures of mantle-derived arc basalts. In this context, this work evaluates the evolution of Cascadia mantle sources by documenting the isotopic and compositional characteristics of primitive basalts along a transect across the Eocene-Oligocene...
Resource Type:: Masters Thesis
Full Text:: endeavors, scientific and otherwise. I want to thank Bob Duncan, Adam Kent, and Armin Stuedlein for

The short term temporal and spatial variability of nitrogen and phosphorus in two Oregon Coast Range streams

Creator:: Scherer, Robert A.
Abstract:: High intensity sampling was undertaken to characterize the temporal and spatial variability of oxidized nitrogen (NO3-N + NO2-N), ammonia-nitrogen (NH3-N), total dissolved phosphorus, total unfiltered phosphorus and orthophosphorus (PO4-P) from two adjacent small streams in Western Oregon's Coast Range, Deer Creek (303 ha) and Flynn Creek (203 ha). Deer Creek...
Resource Type:: Masters Thesis

An analysis of selected socioeconomic factors and their effect on prescription price, dollar markup and percent markup in Oregon

Creator:: Panomvana, Patipan
Abstract:: The purpose of this study was to determine the effect of population size, type of ownership, number of hours open per week, pharmacy location, type of pharmacy, average annual store sales volume, average number of prescriptions filled per day, patient profile system and delivery service on prescription price, dollar markup...
Resource Type:: Masters Thesis
Full Text:: other members of my committee, Dr. J. Lee, Dr. J. W. Ayres, Dr. D. Stennett and Dr. D. Thomas, I wish

Growth and forage quality of tall fescue (Festuca arundinacea schreb.) and perennial ryegrass (Lolium perenne L.) as affected by mefluidide

Creator:: Manurung, Sabam Oloan
Abstract:: Field study with 5 tall fescue genotypes treated at the vegetative growth stage, with 0, 0.28, 0.56, and 0.84 kg/ha of mefluidide was initiated in July, 1980. The regrowth of these plants were again treated at the booting growth stage in April, 1981, with the same rates of mefluidide as...
Resource Type:: Masters Thesis
Full Text:: support given throughout the duration of this study. Appreciation and thanks are extended to Dr. Harold W

Competencies of informational speaking as perceived by selected American and Thai speech professors

Creator:: Kulthongkham, Sukkarnya
Abstract:: This study explored the applicability of a small portion of Western communication theory and practice to an Eastern culture. It compared the opinions or professional judgments of five Thai speech instructors who had obtained their doctorates in American universities with those of five American speech instructors who hold doctorates in...
Resource Type:: Masters Thesis
Full Text:: Acknowledgments I would like to thank the members of my MAIS committee: Dr. Carleton W. Carroll, Dr. E. Wayne

Estimates of genetic variability resulting from single, top, and double cross populations in durum wheat (Triticum turgidum L. var. durum)

Creator:: Abdennadher, Mourad
Abstract:: The success of a plant breeding program depends upon the availability of useable genetic diversity. Such diversity may be enhanced depending on the type of hybridization strategy employed. Segregating progenies resulting from F2 populations, a double cross, and a top cross were compared for the amount of useable genetic diversity...
Resource Type:: Masters Thesis
Full Text:: . Dale W. Weber for serving in my graduate committee and their constructive criticism during the

Conditioning bunchgrass on elk winter range

Creator:: Westenskow, Kathy Jo
Abstract:: Research was conducted near the Starkey Experimental Forest and Range in northeastern Oregon. Effects of defoliating bluebunch wheatgrass (Agropyron spicatum (Pursh) Scribn. and Smith) to increase the quality of regrowth available on elk (Cervus elaphus nelsoni) winter range were studied from 1988 through 1990. Clipping treatments were implemented to condition...
Resource Type:: Masters Thesis
Full Text:: winter defoliated samples (April (W)) were comparable in forage quality and available forage in April

Spatial and temporal variability of carbon dynamics in a tropical forest of Colombia

Creator:: Sierra, Carlos Alberto
Abstract:: Despite the importance of tropical forest ecosystems in the global carbon cycle, there have been few studies of carbon dynamics in this biome. The magnitude of carbon stocks in the tropics and their changes over time are poorly known since ground-based observations are lacking. In this study, total carbon stocks...
Resource Type:: Masters Thesis
Full Text:: the Porce Region, Colombia (6º45’37’’N, 75º06’28’’W) at the area locally known as Porce II where a

Structure, abundance, and distribution of pelagic zooplankton in a deep, oligotrophic Caldera Lake

Creator:: Karnaugh, Elena N.
Abstract:: From July 1985 to April 1987 the pelagic zooplankton community of Crater Lake, Oregon was studied to determine taxonomic structure, absolute and relative densities, and spatial and temporal distributional patterns. Samples were collected using vertically-towed zooplankton nets. The community structure consisted of two cladoceran and nine rotifer species, which were...
Resource Type:: Masters Thesis
Full Text:: . David McIntire and Mr. Thomas W. Cook for serving as committee members. I am indebted to the

ScholarsArchive@OSU

Genetic studies with Russian wheat aphid (Diuraphis noxia Mordvilko) in PI 294994 bread wheat (Triticum aestivum L.)

Variation in adaptive traits of coastal Douglas-fir : genetic and environmental components

Development of oven and Karl Fischer techniques for moisture testing of grass seeds

New configurations of bandpass filters in single and multilayer environment

Spherical Au Nanoparticle Interaction with Lipid Monolayers Probed with Sum Frequency Generation Spectroscopy

A petrogenetic model for the Caribbean large igneous province

Evolution and inheritance of Cascadia sub-arc mantle reservoirs

The short term temporal and spatial variability of nitrogen and phosphorus in two Oregon Coast Range streams

An analysis of selected socioeconomic factors and their effect on prescription price, dollar markup and percent markup in Oregon

Growth and forage quality of tall fescue (Festuca arundinacea schreb.) and perennial ryegrass (Lolium perenne L.) as affected by mefluidide

Competencies of informational speaking as perceived by selected American and Thai speech professors

Estimates of genetic variability resulting from single, top, and double cross populations in durum wheat (Triticum turgidum L. var. durum)

Conditioning bunchgrass on elk winter range

Spatial and temporal variability of carbon dynamics in a tropical forest of Colombia

Structure, abundance, and distribution of pelagic zooplankton in a deep, oligotrophic Caldera Lake

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